include/socgraph.php

   1 <?php
   2
   3 require_once('include/datetime.php');
   4 require_once("include/Scrape.php");
   5 require_once("include/html2bbcode.php");
   6
   7 /*
   8  To-Do:
   9  - Move GNU Social URL schemata (http://server.tld/user/number) to http://server.tld/username
  10 */
  11
  12 /*
  13  * poco_load
  14  *
  15  * Given a contact-id (minimum), load the PortableContacts friend list for that contact,
  16  * and add the entries to the gcontact (Global Contact) table, or update existing entries
  17  * if anything (name or photo) has changed.
  18  * We use normalised urls for comparison which ignore http vs https and www.domain vs domain
  19  *
  20  * Once the global contact is stored add (if necessary) the contact linkage which associates
  21  * the given uid, cid to the global contact entry. There can be many uid/cid combinations
  22  * pointing to the same global contact id.
  23  *
  24  */
  25
  26
  27
  28
  29 function poco_load($cid,$uid = 0,$zcid = 0,$url = null) {
  30
  31         $a = get_app();
  32
  33         if($cid) {
  34                 if((! $url) || (! $uid)) {
  35                         $r = q("select `poco`, `uid` from `contact` where `id` = %d limit 1",
  36                                 intval($cid)
  37                         );
  38                         if(count($r)) {
  39                                 $url = $r[0]['poco'];
  40                                 $uid = $r[0]['uid'];
  41                         }
  42                 }
  43                 if(! $uid)
  44                         return;
  45         }
  46
  47         if(! $url)
  48                 return;
  49
  50         $url = $url . (($uid) ? '/@me/@all?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation' : '?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation') ;
  51
  52         logger('poco_load: ' . $url, LOGGER_DEBUG);
  53
  54         $s = fetch_url($url);
  55
  56         logger('poco_load: returns ' . $s, LOGGER_DATA);
  57
  58         logger('poco_load: return code: ' . $a->get_curl_code(), LOGGER_DEBUG);
  59
  60         if(($a->get_curl_code() > 299) || (! $s))
  61                 return;
  62
  63         $j = json_decode($s);
  64
  65         logger('poco_load: json: ' . print_r($j,true),LOGGER_DATA);
  66
  67         if(! isset($j->entry))
  68                 return;
  69
  70         $total = 0;
  71         foreach($j->entry as $entry) {
  72
  73                 $total ++;
  74                 $profile_url = '';
  75                 $profile_photo = '';
  76                 $connect_url = '';
  77                 $name = '';
  78                 $network = '';
  79                 $updated = '0000-00-00 00:00:00';
  80                 $location = '';
  81                 $about = '';
  82                 $keywords = '';
  83                 $gender = '';
  84                 $generation = 0;
  85
  86                 $name = $entry->displayName;
  87
  88                 if(isset($entry->urls)) {
  89                         foreach($entry->urls as $url) {
  90                                 if($url->type == 'profile') {
  91                                         $profile_url = $url->value;
  92                                         continue;
  93                                 }
  94                                 if($url->type == 'webfinger') {
  95                                         $connect_url = str_replace('acct:' , '', $url->value);
  96                                         continue;
  97                                 }
  98                         }
  99                 }
 100                 if(isset($entry->photos)) {
 101                         foreach($entry->photos as $photo) {
 102                                 if($photo->type == 'profile') {
 103                                         $profile_photo = $photo->value;
 104                                         continue;
 105                                 }
 106                         }
 107                 }
 108
 109                 if(isset($entry->updated))
 110                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
 111
 112                 if(isset($entry->network))
 113                         $network = $entry->network;
 114
 115                 if(isset($entry->currentLocation))
 116                         $location = $entry->currentLocation;
 117
 118                 if(isset($entry->aboutMe))
 119                         $about = html2bbcode($entry->aboutMe);
 120
 121                 if(isset($entry->gender))
 122                         $gender = $entry->gender;
 123
 124                 if(isset($entry->generation) AND ($entry->generation > 0))
 125                         $generation = ++$entry->generation;
 126
 127                 if(isset($entry->tags))
 128                         foreach($entry->tags as $tag)
 129                                 $keywords = implode(", ", $tag);
 130
 131                 // If you query a Friendica server for its profiles, the network has to be Friendica
 132                 // To-Do: It could also be a Redmatrix server
 133                 //if ($uid == 0)
 134                 //      $network = NETWORK_DFRN;
 135
 136                 poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid, $uid, $zcid);
 137
 138                 // Update the Friendica contacts. Diaspora is doing it via a message. (See include/diaspora.php)
 139                 if (($location != "") OR ($about != "") OR ($keywords != "") OR ($gender != ""))
 140                         q("UPDATE `contact` SET `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s'
 141                                 WHERE `nurl` = '%s' AND NOT `self` AND `network` = '%s'",
 142                                 dbesc($location),
 143                                 dbesc($about),
 144                                 dbesc($keywords),
 145                                 dbesc($gender),
 146                                 dbesc(normalise_link($profile_url)),
 147                                 dbesc(NETWORK_DFRN));
 148         }
 149         logger("poco_load: loaded $total entries",LOGGER_DEBUG);
 150
 151         q("DELETE FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `zcid` = %d AND `updated` < UTC_TIMESTAMP - INTERVAL 2 DAY",
 152                 intval($cid),
 153                 intval($uid),
 154                 intval($zcid)
 155         );
 156
 157 }
 158
 159 function poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, $cid = 0, $uid = 0, $zcid = 0) {
 160
 161         $a = get_app();
 162
 163         // Generation:
 164         //  0: No definition
 165         //  1: Profiles on this server
 166         //  2: Contacts of profiles on this server
 167         //  3: Contacts of contacts of profiles on this server
 168         //  4: ...
 169
 170         $gcid = "";
 171
 172         if ($profile_url == "")
 173                 return $gcid;
 174
 175         $urlparts = parse_url($profile_url);
 176         if (!isset($urlparts["scheme"]))
 177                 return $gcid;
 178
 179         if (in_array($urlparts["host"], array("facebook.com", "twitter.com", "www.twitter-rss.com",
 180                                                 "identi.ca", "alpha.app.net")))
 181                 return $gcid;
 182
 183         $orig_updated = $updated;
 184
 185         // Don't store the statusnet connector as network
 186         // We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
 187         if ($network == NETWORK_STATUSNET)
 188                 $network = "";
 189
 190         // The global contacts should contain the original picture, not the cached one
 191         if (($generation != 1) AND stristr(normalise_link($profile_photo), normalise_link($a->get_baseurl()."/photo/")))
 192                 $profile_photo = "";
 193
 194         $r = q("SELECT `network` FROM `contact` WHERE `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
 195                 dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 196         );
 197         if(count($r))
 198                 $network = $r[0]["network"];
 199
 200         if (($network == "") OR ($network == NETWORK_OSTATUS)) {
 201                 $r = q("SELECT `network`, `url` FROM `contact` WHERE `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
 202                         dbesc($profile_url), dbesc(normalise_link($profile_url)), dbesc(NETWORK_STATUSNET)
 203                 );
 204                 if(count($r)) {
 205                         $network = $r[0]["network"];
 206                         $profile_url = $r[0]["url"];
 207                 }
 208         }
 209
 210         $x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 211                 dbesc(normalise_link($profile_url))
 212         );
 213
 214         if (count($x)) {
 215                 if (($network == "") AND ($x[0]["network"] != NETWORK_STATUSNET))
 216                         $network = $x[0]["network"];
 217
 218                 if ($updated == "0000-00-00 00:00:00")
 219                         $updated = $x[0]["updated"];
 220
 221                 $created = $x[0]["created"];
 222                 $last_contact = $x[0]["last_contact"];
 223                 $last_failure = $x[0]["last_failure"];
 224                 $server_url = $x[0]["server_url"];
 225                 $nick = $x[0]["nick"];
 226         } else {
 227                 $created = "0000-00-00 00:00:00";
 228                 $last_contact = "0000-00-00 00:00:00";
 229                 $last_failure = "0000-00-00 00:00:00";
 230                 $server_url = "";
 231
 232                 $urlparts = parse_url($profile_url);
 233                 $nick = end(explode("/", $urlparts["path"]));
 234         }
 235
 236         if ((($network == "") OR ($name == "") OR ($profile_photo == "") OR ($server_url == ""))
 237                 AND poco_reachable($profile_url, $server_url, $network)) {
 238                 $data = probe_url($profile_url);
 239                 $network = $data["network"];
 240                 $name = $data["name"];
 241                 $nick = $data["nick"];
 242                 $profile_url = $data["url"];
 243                 $profile_photo = $data["photo"];
 244                 $server_url = $data["baseurl"];
 245         }
 246
 247         if (count($x) AND ($x[0]["network"] == "") AND ($network != "")) {
 248                 q("UPDATE `gcontact` SET `network` = '%s' WHERE `nurl` = '%s'",
 249                         dbesc($network),
 250                         dbesc(normalise_link($profile_url))
 251                 );
 252         }
 253
 254         if (($name == "") OR ($profile_photo == ""))
 255                 return $gcid;
 256
 257         if (!in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA)))
 258                 return $gcid;
 259
 260         logger("profile-check generation: ".$generation." Network: ".$network." URL: ".$profile_url." name: ".$name." avatar: ".$profile_photo, LOGGER_DEBUG);
 261
 262         poco_check_server($server_url, $network);
 263
 264         // Only fetch last update manually if it wasn't provided and enabled in the system
 265         if (get_config('system','poco_completion') AND ($orig_updated == "0000-00-00 00:00:00")
 266                 AND poco_do_update($created, $updated, $last_failure, $last_contact)
 267                 AND poco_reachable($profile_url, $server_url, $network)) {
 268                 $last_updated = poco_last_updated($profile_url);
 269                 if ($last_updated) {
 270                         $updated = $last_updated;
 271                         $last_contact = datetime_convert();
 272                         logger("Last updated for profile ".$profile_url.": ".$updated, LOGGER_DEBUG);
 273                 } else
 274                         $last_failure = datetime_convert();
 275         }
 276
 277         if(count($x)) {
 278                 $gcid = $x[0]['id'];
 279
 280                 if (($location == "") AND ($x[0]['location'] != ""))
 281                         $location = $x[0]['location'];
 282
 283                 if (($about == "") AND ($x[0]['about'] != ""))
 284                         $about = $x[0]['about'];
 285
 286                 if (($gender == "") AND ($x[0]['gender'] != ""))
 287                         $gender = $x[0]['gender'];
 288
 289                 if (($keywords == "") AND ($x[0]['keywords'] != ""))
 290                         $keywords = $x[0]['keywords'];
 291
 292                 if (($generation == 0) AND ($x[0]['generation'] > 0))
 293                         $generation = $x[0]['generation'];
 294
 295                 if($x[0]['name'] != $name || $x[0]['photo'] != $profile_photo || $x[0]['updated'] < $updated) {
 296                         q("UPDATE `gcontact` SET `name` = '%s', `network` = '%s', `photo` = '%s', `connect` = '%s', `url` = '%s', `server_url` = '%s',
 297                                 `updated` = '%s', `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s', `generation` = %d
 298                                 WHERE (`generation` >= %d OR `generation` = 0) AND `nurl` = '%s'",
 299                                 dbesc($name),
 300                                 dbesc($network),
 301                                 dbesc($profile_photo),
 302                                 dbesc($connect_url),
 303                                 dbesc($profile_url),
 304                                 dbesc($server_url),
 305                                 dbesc($updated),
 306                                 dbesc($location),
 307                                 dbesc($about),
 308                                 dbesc($keywords),
 309                                 dbesc($gender),
 310                                 intval($generation),
 311                                 intval($generation),
 312                                 dbesc(normalise_link($profile_url))
 313                         );
 314                 }
 315         } else {
 316                 q("INSERT INTO `gcontact` (`name`, `nick`, `network`, `url`, `nurl`, `photo`, `connect`, `server_url`, `created`, `updated`, `last_contact`, `last_failure`, `location`, `about`, `keywords`, `gender`, `generation`)
 317                         VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d)",
 318                         dbesc($name),
 319                         dbesc($nick),
 320                         dbesc($network),
 321                         dbesc($profile_url),
 322                         dbesc(normalise_link($profile_url)),
 323                         dbesc($profile_photo),
 324                         dbesc($connect_url),
 325                         dbesc($server_url),
 326                         dbesc(datetime_convert()),
 327                         dbesc($updated),
 328                         dbesc($last_contact),
 329                         dbesc($last_failure),
 330                         dbesc($location),
 331                         dbesc($about),
 332                         dbesc($keywords),
 333                         dbesc($gender),
 334                         intval($generation)
 335                 );
 336                 $x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
 337                         dbesc(normalise_link($profile_url))
 338                 );
 339                 if(count($x))
 340                         $gcid = $x[0]['id'];
 341         }
 342
 343         if(! $gcid)
 344                 return $gcid;
 345
 346         $r = q("SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
 347                 intval($cid),
 348                 intval($uid),
 349                 intval($gcid),
 350                 intval($zcid)
 351         );
 352         if(! count($r)) {
 353                 q("INSERT INTO `glink` (`cid`,`uid`,`gcid`,`zcid`, `updated`) VALUES (%d,%d,%d,%d, '%s') ",
 354                         intval($cid),
 355                         intval($uid),
 356                         intval($gcid),
 357                         intval($zcid),
 358                         dbesc(datetime_convert())
 359                 );
 360         } else {
 361                 q("UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
 362                         dbesc(datetime_convert()),
 363                         intval($cid),
 364                         intval($uid),
 365                         intval($gcid),
 366                         intval($zcid)
 367                 );
 368         }
 369
 370         // For unknown reasons there are sometimes duplicates
 371         q("DELETE FROM `gcontact` WHERE `nurl` = '%s' AND `id` != %d AND
 372                 NOT EXISTS (SELECT `gcid` FROM `glink` WHERE `gcid` = `gcontact`.`id`)",
 373                 dbesc(normalise_link($profile_url)),
 374                 intval($gcid)
 375         );
 376
 377         return $gcid;
 378 }
 379
 380 function poco_reachable($profile, $server = "", $network = "") {
 381
 382         if ($server == "")
 383                 $server = poco_detect_server($profile);
 384
 385         if ($server == "")
 386                 return true;
 387
 388         return poco_check_server($server, $network);
 389 }
 390
 391 function poco_detect_server($profile) {
 392
 393         // Try to detect the server path based upon some known standard paths
 394         $server_url = "";
 395
 396         if ($server_url == "") {
 397                 $friendica = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $profile);
 398                 if ($friendica != $profile) {
 399                         $server_url = $friendica;
 400                         $network = NETWORK_DFRN;
 401                 }
 402         }
 403
 404         if ($server_url == "") {
 405                 $diaspora = preg_replace("=(https?://)(.*)/u/(.*)=ism", "$1$2", $profile);
 406                 if ($diaspora != $profile) {
 407                         $server_url = $diaspora;
 408                         $network = NETWORK_DIASPORA;
 409                 }
 410         }
 411
 412         if ($server_url == "") {
 413                 $red = preg_replace("=(https?://)(.*)/channel/(.*)=ism", "$1$2", $profile);
 414                 if ($red != $profile) {
 415                         $server_url = $red;
 416                         $network = NETWORK_DIASPORA;
 417                 }
 418         }
 419
 420         return $server_url;
 421 }
 422
 423 function poco_last_updated($profile) {
 424
 425         $gcontacts = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s'",
 426                         dbesc(normalise_link($profile)));
 427
 428         if ($gcontacts[0]["created"] == "0000-00-00 00:00:00")
 429                 q("UPDATE `gcontact` SET `created` = '%s' WHERE `nurl` = '%s'",
 430                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 431
 432         if (($gcontacts[0]["server_url"] != "") AND ($gcontacts[0]["network"] != ""))
 433                 if (!poco_check_server($gcontacts[0]["server_url"], $gcontacts[0]["network"]))
 434                         return false;
 435
 436         // noscrape is really fast so we don't cache the call.
 437         if (($gcontacts[0]["server_url"] != "") AND ($gcontacts[0]["nick"] != "")) {
 438
 439                 //  Use noscrape if possible
 440                 $server = q("SELECT `noscrape` FROM `gserver` WHERE `nurl` = '%s' AND `noscrape` != ''", dbesc(normalise_link($gcontacts[0]["server_url"])));
 441
 442                 if ($server) {
 443                         $noscraperet = z_fetch_url($server[0]["noscrape"]."/".$gcontacts[0]["nick"]);
 444                          if ($noscraperet["success"]) {
 445                                 $noscrape = json_decode($noscraperet["body"], true);
 446
 447                                 if (($noscrape["name"] != "") AND ($noscrape["name"] != $gcontacts[0]["name"]))
 448                                         q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
 449                                                 dbesc($noscrape["name"]), dbesc(normalise_link($profile)));
 450
 451                                 if (($noscrape["photo"] != "") AND ($noscrape["photo"] != $gcontacts[0]["photo"]))
 452                                         q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
 453                                                 dbesc($noscrape["photo"]), dbesc(normalise_link($profile)));
 454
 455                                 if (($noscrape["updated"] != "") AND ($noscrape["updated"] != $gcontacts[0]["updated"]))
 456                                         q("UPDATE `gcontact` SET `updated` = '%s' WHERE `nurl` = '%s'",
 457                                                 dbesc($noscrape["updated"]), dbesc(normalise_link($profile)));
 458
 459                                 if (($noscrape["gender"] != "") AND ($noscrape["gender"] != $gcontacts[0]["gender"]))
 460                                         q("UPDATE `gcontact` SET `gender` = '%s' WHERE `nurl` = '%s'",
 461                                                 dbesc($noscrape["gender"]), dbesc(normalise_link($profile)));
 462
 463                                 if (($noscrape["about"] != "") AND ($noscrape["about"] != $gcontacts[0]["name"]))
 464                                         q("UPDATE `gcontact` SET `about` = '%s' WHERE `nurl` = '%s'",
 465                                                 dbesc($noscrape["about"]), dbesc(normalise_link($profile)));
 466
 467                                 if (isset($noscrape["tags"]))
 468                                         $keywords = implode(" ", $noscrape["tags"]);
 469                                 else
 470                                         $keywords = "";
 471
 472                                 if (($keywords != "") AND ($keywords != $gcontacts[0]["keywords"]))
 473                                         q("UPDATE `gcontact` SET `keywords` = '%s' WHERE `nurl` = '%s'",
 474                                                 dbesc($keywords), dbesc(normalise_link($profile)));
 475
 476                                 $location = $noscrape["locality"];
 477
 478                                 if ($noscrape["region"] != "") {
 479                                         if ($location != "")
 480                                                 $location .= ", ";
 481
 482                                         $location .= $noscrape["region"];
 483                                 }
 484
 485                                 if ($noscrape["country-name"] != "") {
 486                                         if ($location != "")
 487                                                 $location .= ", ";
 488
 489                                         $location .= $noscrape["country-name"];
 490                                 }
 491
 492                                 if (($location != "") AND ($location != $gcontacts[0]["location"]))
 493                                         q("UPDATE `gcontact` SET `location` = '%s' WHERE `nurl` = '%s'",
 494                                                 dbesc($location), dbesc(normalise_link($profile)));
 495
 496                                 return $noscrape["updated"];
 497                         }
 498                 }
 499         }
 500
 501         // If we only can poll the feed, then we only do this once a while
 502         if (!poco_do_update($gcontacts[0]["created"], $gcontacts[0]["updated"], $gcontacts[0]["last_failure"],  $gcontacts[0]["last_contact"]))
 503                 return $gcontacts[0]["updated"];
 504
 505         $data = probe_url($profile);
 506
 507         if (($data["poll"] == "") OR ($data["network"] == NETWORK_FEED)) {
 508                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 509                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 510                 return false;
 511         }
 512
 513         if (($data["name"] != "") AND ($data["name"] != $gcontacts[0]["name"]))
 514                 q("UPDATE `gcontact` SET `name` = '%s' WHERE `nurl` = '%s'",
 515                         dbesc($data["name"]), dbesc(normalise_link($profile)));
 516
 517         if (($data["nick"] != "") AND ($data["nick"] != $gcontacts[0]["nick"]))
 518                 q("UPDATE `gcontact` SET `nick` = '%s' WHERE `nurl` = '%s'",
 519                         dbesc($data["nick"]), dbesc(normalise_link($profile)));
 520
 521         if (($data["addr"] != "") AND ($data["addr"] != $gcontacts[0]["connect"]))
 522                 q("UPDATE `gcontact` SET `connect` = '%s' WHERE `nurl` = '%s'",
 523                         dbesc($data["addr"]), dbesc(normalise_link($profile)));
 524
 525         if (($data["photo"] != "") AND ($data["photo"] != $gcontacts[0]["photo"]))
 526                 q("UPDATE `gcontact` SET `photo` = '%s' WHERE `nurl` = '%s'",
 527                         dbesc($data["photo"]), dbesc(normalise_link($profile)));
 528
 529         if (($data["baseurl"] != "") AND ($data["baseurl"] != $gcontacts[0]["server_url"]))
 530                 q("UPDATE `gcontact` SET `server_url` = '%s' WHERE `nurl` = '%s'",
 531                         dbesc($data["baseurl"]), dbesc(normalise_link($profile)));
 532
 533         $feedret = z_fetch_url($data["poll"]);
 534
 535         if (!$feedret["success"]) {
 536                 q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
 537                         dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 538                 return false;
 539         }
 540
 541         $doc = new DOMDocument();
 542         @$doc->loadXML($feedret["body"]);
 543
 544         $xpath = new DomXPath($doc);
 545         $xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom");
 546
 547         $entries = $xpath->query('/atom:feed/atom:entry');
 548
 549         $last_updated = "";
 550
 551         foreach ($entries AS $entry) {
 552                 $published = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
 553                 $updated = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
 554
 555                 if ($last_updated < $published)
 556                         $last_updated = $published;
 557
 558                 if ($last_updated < $updated)
 559                         $last_updated = $updated;
 560         }
 561
 562         // Maybe there aren't any entries. Then check if it is a valid feed
 563         if ($last_updated == "")
 564                 if ($xpath->query('/atom:feed')->length > 0)
 565                         $last_updated = "0000-00-00 00:00:00";
 566
 567         q("UPDATE `gcontact` SET `updated` = '%s', `last_contact` = '%s' WHERE `nurl` = '%s'",
 568                 dbesc($last_updated), dbesc(datetime_convert()), dbesc(normalise_link($profile)));
 569
 570         if (($gcontacts[0]["generation"] == 0))
 571                 q("UPDATE `gcontact` SET `generation` = 9 WHERE `nurl` = '%s'",
 572                         dbesc(normalise_link($profile)));
 573
 574         return($last_updated);
 575 }
 576
 577 function poco_do_update($created, $updated, $last_failure,  $last_contact) {
 578         $now = strtotime(datetime_convert());
 579
 580         if ($updated > $last_contact)
 581                 $contact_time = strtotime($updated);
 582         else
 583                 $contact_time = strtotime($last_contact);
 584
 585         $failure_time = strtotime($last_failure);
 586         $created_time = strtotime($created);
 587
 588         // If there is no "created" time then use the current time
 589         if ($created_time <= 0)
 590                 $created_time = $now;
 591
 592         // If the last contact was less than 24 hours then don't update
 593         if (($now - $contact_time) < (60 * 60 * 24))
 594                 return false;
 595
 596         // If the last failure was less than 24 hours then don't update
 597         if (($now - $failure_time) < (60 * 60 * 24))
 598                 return false;
 599
 600         // If the last contact was less than a week ago and the last failure is older than a week then don't update
 601         if ((($now - $contact_time) < (60 * 60 * 24 * 7)) AND ($contact_time > $failure_time))
 602                 return false;
 603
 604         // If the last contact time was more than a week ago and the contact was created more than a week ago, then only try once a week
 605         if ((($now - $contact_time) > (60 * 60 * 24 * 7)) AND (($now - $created_time) > (60 * 60 * 24 * 7)) AND (($now - $failure_time) < (60 * 60 * 24 * 7)))
 606                 return false;
 607
 608         // If the last contact time was more than a month ago and the contact was created more than a month ago, then only try once a month
 609         if ((($now - $contact_time) > (60 * 60 * 24 * 30)) AND (($now - $created_time) > (60 * 60 * 24 * 30)) AND (($now - $failure_time) < (60 * 60 * 24 * 30)))
 610                 return false;
 611
 612         return true;
 613 }
 614
 615 function poco_to_boolean($val) {
 616         if (($val == "true") OR ($val == 1))
 617                 return(true);
 618         if (($val == "false") OR ($val == 0))
 619                 return(false);
 620
 621         return ($val);
 622 }
 623
 624 function poco_check_server($server_url, $network = "", $force = false) {
 625
 626         if ($server_url == "")
 627                 return false;
 628
 629         $servers = q("SELECT * FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 630         if ($servers) {
 631
 632                 if ($servers[0]["created"] == "0000-00-00 00:00:00")
 633                         q("UPDATE `gserver` SET `created` = '%s' WHERE `nurl` = '%s'",
 634                                 dbesc(datetime_convert()), dbesc(normalise_link($server_url)));
 635
 636                 $poco = $servers[0]["poco"];
 637                 $noscrape = $servers[0]["noscrape"];
 638
 639                 if ($network == "")
 640                         $network = $servers[0]["network"];
 641
 642                 $last_contact = $servers[0]["last_contact"];
 643                 $last_failure = $servers[0]["last_failure"];
 644                 $version = $servers[0]["version"];
 645                 $platform = $servers[0]["platform"];
 646                 $site_name = $servers[0]["site_name"];
 647                 $info = $servers[0]["info"];
 648                 $register_policy = $servers[0]["register_policy"];
 649
 650                 if (!$force AND !poco_do_update($servers[0]["created"], "", $last_failure, $last_contact)) {
 651                         logger("Use cached data for server ".$server_url, LOGGER_DEBUG);
 652                         return ($last_contact >= $last_failure);
 653                 }
 654         } else {
 655                 $poco = "";
 656                 $noscrape = "";
 657                 $version = "";
 658                 $platform = "";
 659                 $site_name = "";
 660                 $info = "";
 661                 $register_policy = -1;
 662
 663                 $last_contact = "0000-00-00 00:00:00";
 664                 $last_failure = "0000-00-00 00:00:00";
 665         }
 666         logger("Server ".$server_url." is unknown. Start discovery.", LOGGER_DEBUG);
 667
 668         $failure = false;
 669         $orig_last_failure = $last_failure;
 670
 671         // Check if the page is accessible via SSL.
 672         $server_url = str_replace("http://", "https://", $server_url);
 673         $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 674
 675         // Maybe the page is unencrypted only?
 676         $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 677         if (!$serverret["success"] OR ($serverret["body"] == "") OR (@sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 678                 $server_url = str_replace("https://", "http://", $server_url);
 679                 $serverret = z_fetch_url($server_url."/.well-known/host-meta");
 680
 681                 $xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
 682         }
 683
 684         if (!$serverret["success"] OR ($serverret["body"] == "") OR (sizeof($xmlobj) == 0) OR !is_object($xmlobj)) {
 685                 $last_failure = datetime_convert();
 686                 $failure = true;
 687         } elseif ($network == NETWORK_DIASPORA)
 688                 $last_contact = datetime_convert();
 689
 690         if (!$failure) {
 691                 // Test for Diaspora
 692                 $serverret = z_fetch_url($server_url);
 693
 694                 $lines = explode("\n",$serverret["header"]);
 695                 if(count($lines))
 696                         foreach($lines as $line) {
 697                                 $line = trim($line);
 698                                 if(stristr($line,'X-Diaspora-Version:')) {
 699                                         $platform = "Diaspora";
 700                                         $version = trim(str_replace("X-Diaspora-Version:", "", $line));
 701                                         $version = trim(str_replace("x-diaspora-version:", "", $version));
 702                                         $network = NETWORK_DIASPORA;
 703                                 }
 704                         }
 705         }
 706
 707         if (!$failure) {
 708                 // Test for Statusnet
 709                 // Will also return data for Friendica and GNU Social - but it will be overwritten later
 710                 // The "not implemented" is a special treatment for really, really old Friendica versions
 711                 $serverret = z_fetch_url($server_url."/api/statusnet/version.json");
 712                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
 713                         $platform = "StatusNet";
 714                         $version = trim($serverret["body"], '"');
 715                         $network = NETWORK_OSTATUS;
 716                 }
 717
 718                 // Test for GNU Social
 719                 $serverret = z_fetch_url($server_url."/api/gnusocial/version.json");
 720                 if ($serverret["success"] AND ($serverret["body"] != '{"error":"not implemented"}') AND ($serverret["body"] != '') AND (strlen($serverret["body"]) < 250)) {
 721                         $platform = "GNU Social";
 722                         $version = trim($serverret["body"], '"');
 723                         $network = NETWORK_OSTATUS;
 724                 }
 725
 726                 $serverret = z_fetch_url($server_url."/api/statusnet/config.json");
 727                 if ($serverret["success"]) {
 728                         $data = json_decode($serverret["body"]);
 729
 730                         if (isset($data->site->server)) {
 731                                 $last_contact = datetime_convert();
 732
 733                                 if (isset($data->site->hubzilla)) {
 734                                         $platform = $data->site->hubzilla->PLATFORM_NAME;
 735                                         $version = $data->site->hubzilla->RED_VERSION;
 736                                         $network = NETWORK_DIASPORA;
 737                                 }
 738                                 if (isset($data->site->redmatrix)) {
 739                                         if (isset($data->site->redmatrix->PLATFORM_NAME))
 740                                                 $platform = $data->site->redmatrix->PLATFORM_NAME;
 741                                         elseif (isset($data->site->redmatrix->RED_PLATFORM))
 742                                                 $platform = $data->site->redmatrix->RED_PLATFORM;
 743
 744                                         $version = $data->site->redmatrix->RED_VERSION;
 745                                         $network = NETWORK_DIASPORA;
 746                                 }
 747                                 if (isset($data->site->friendica)) {
 748                                         $platform = $data->site->friendica->FRIENDICA_PLATFORM;
 749                                         $version = $data->site->friendica->FRIENDICA_VERSION;
 750                                         $network = NETWORK_DFRN;
 751                                 }
 752
 753                                 $site_name = $data->site->name;
 754
 755                                 $data->site->closed = poco_to_boolean($data->site->closed);
 756                                 $data->site->private = poco_to_boolean($data->site->private);
 757                                 $data->site->inviteonly = poco_to_boolean($data->site->inviteonly);
 758
 759                                 if (!$data->site->closed AND !$data->site->private and $data->site->inviteonly)
 760                                         $register_policy = REGISTER_APPROVE;
 761                                 elseif (!$data->site->closed AND !$data->site->private)
 762                                         $register_policy = REGISTER_OPEN;
 763                                 else
 764                                         $register_policy = REGISTER_CLOSED;
 765                         }
 766                 }
 767         }
 768
 769         // Query statistics.json. Optional package for Diaspora, Friendica and Redmatrix
 770         if (!$failure) {
 771                 $serverret = z_fetch_url($server_url."/statistics.json");
 772                 if ($serverret["success"]) {
 773                         $data = json_decode($serverret["body"]);
 774                         if ($version == "")
 775                                 $version = $data->version;
 776
 777                         $site_name = $data->name;
 778
 779                         if (isset($data->network) AND ($platform == ""))
 780                                 $platform = $data->network;
 781
 782                         if ($platform == "Diaspora")
 783                                 $network = NETWORK_DIASPORA;
 784
 785                         if ($data->registrations_open)
 786                                 $register_policy = REGISTER_OPEN;
 787                         else
 788                                 $register_policy = REGISTER_CLOSED;
 789
 790                         if (isset($data->version))
 791                                 $last_contact = datetime_convert();
 792                 }
 793         }
 794
 795         // Check for noscrape
 796         // Friendica servers could be detected as OStatus servers
 797         if (!$failure AND in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS))) {
 798                 $serverret = z_fetch_url($server_url."/friendica/json");
 799
 800                 if (!$serverret["success"])
 801                         $serverret = z_fetch_url($server_url."/friendika/json");
 802
 803                 if ($serverret["success"]) {
 804                         $data = json_decode($serverret["body"]);
 805
 806                         if (isset($data->version)) {
 807                                 $last_contact = datetime_convert();
 808                                 $network = NETWORK_DFRN;
 809
 810                                 $noscrape = $data->no_scrape_url;
 811                                 $version = $data->version;
 812                                 $site_name = $data->site_name;
 813                                 $info = $data->info;
 814                                 $register_policy_str = $data->register_policy;
 815                                 $platform = $data->platform;
 816
 817                                 switch ($register_policy_str) {
 818                                         case "REGISTER_CLOSED":
 819                                                 $register_policy = REGISTER_CLOSED;
 820                                                 break;
 821                                         case "REGISTER_APPROVE":
 822                                                 $register_policy = REGISTER_APPROVE;
 823                                                 break;
 824                                         case "REGISTER_OPEN":
 825                                                 $register_policy = REGISTER_OPEN;
 826                                                 break;
 827                                 }
 828                         }
 829                 }
 830         }
 831
 832         // Look for poco
 833         if (!$failure) {
 834                 $serverret = z_fetch_url($server_url."/poco");
 835                 if ($serverret["success"]) {
 836                         $data = json_decode($serverret["body"]);
 837                         if (isset($data->totalResults)) {
 838                                 $poco = $server_url."/poco";
 839                                 $last_contact = datetime_convert();
 840                         }
 841                 }
 842         }
 843
 844         // Check again if the server exists
 845         $servers = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
 846
 847         if ($servers)
 848                  q("UPDATE `gserver` SET `url` = '%s', `version` = '%s', `site_name` = '%s', `info` = '%s', `register_policy` = %d, `poco` = '%s', `noscrape` = '%s',
 849                         `network` = '%s', `platform` = '%s', `last_contact` = '%s', `last_failure` = '%s' WHERE `nurl` = '%s'",
 850                         dbesc($server_url),
 851                         dbesc($version),
 852                         dbesc($site_name),
 853                         dbesc($info),
 854                         intval($register_policy),
 855                         dbesc($poco),
 856                         dbesc($noscrape),
 857                         dbesc($network),
 858                         dbesc($platform),
 859                         dbesc($last_contact),
 860                         dbesc($last_failure),
 861                         dbesc(normalise_link($server_url))
 862                 );
 863         else
 864                 q("INSERT INTO `gserver` (`url`, `nurl`, `version`, `site_name`, `info`, `register_policy`, `poco`, `noscrape`, `network`, `platform`, `created`, `last_contact`, `last_failure`)
 865                                         VALUES ('%s', '%s', '%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s')",
 866                                 dbesc($server_url),
 867                                 dbesc(normalise_link($server_url)),
 868                                 dbesc($version),
 869                                 dbesc($site_name),
 870                                 dbesc($info),
 871                                 intval($register_policy),
 872                                 dbesc($poco),
 873                                 dbesc($noscrape),
 874                                 dbesc($network),
 875                                 dbesc($platform),
 876                                 dbesc(datetime_convert()),
 877                                 dbesc($last_contact),
 878                                 dbesc($last_failure),
 879                                 dbesc(datetime_convert())
 880                 );
 881
 882         logger("End discovery for server ".$server_url, LOGGER_DEBUG);
 883
 884         return !$failure;
 885 }
 886
 887 function poco_contact_from_body($body, $created, $cid, $uid) {
 888         preg_replace_callback("/\[share(.*?)\].*?\[\/share\]/ism",
 889                 function ($match) use ($created, $cid, $uid){
 890                         return(sub_poco_from_share($match, $created, $cid, $uid));
 891                 }, $body);
 892 }
 893
 894 function sub_poco_from_share($share, $created, $cid, $uid) {
 895         $profile = "";
 896         preg_match("/profile='(.*?)'/ism", $share[1], $matches);
 897         if ($matches[1] != "")
 898                 $profile = $matches[1];
 899
 900         preg_match('/profile="(.*?)"/ism', $share[1], $matches);
 901         if ($matches[1] != "")
 902                 $profile = $matches[1];
 903
 904         if ($profile == "")
 905                 return;
 906
 907         logger("prepare poco_check for profile ".$profile, LOGGER_DEBUG);
 908         poco_check($profile, "", "", "", "", "", "", "", "", $created, 3, $cid, $uid);
 909 }
 910
 911 function poco_store($item) {
 912
 913         // Isn't it public?
 914         if ($item['private'])
 915                 return;
 916
 917         // Or is it from a network where we don't store the global contacts?
 918         if (!in_array($item["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, NETWORK_STATUSNET, "")))
 919                 return;
 920
 921         // Is it a global copy?
 922         $store_gcontact = ($item["uid"] == 0);
 923
 924         // Is it a comment on a global copy?
 925         if (!$store_gcontact AND ($item["uri"] != $item["parent-uri"])) {
 926                 $q = q("SELECT `id` FROM `item` WHERE `uri`='%s' AND `uid` = 0", $item["parent-uri"]);
 927                 $store_gcontact = count($q);
 928         }
 929
 930         if (!$store_gcontact)
 931                 return;
 932
 933         // "3" means: We don't know this contact directly (Maybe a reshared item)
 934         $generation = 3;
 935         $network = "";
 936         $profile_url = $item["author-link"];
 937
 938         // Is it a user from our server?
 939         $q = q("SELECT `id` FROM `contact` WHERE `self` AND `nurl` = '%s' LIMIT 1",
 940                 dbesc(normalise_link($item["author-link"])));
 941         if (count($q)) {
 942                 logger("Our user (generation 1): ".$item["author-link"], LOGGER_DEBUG);
 943                 $generation = 1;
 944                 $network = NETWORK_DFRN;
 945         } else { // Is it a contact from a user on our server?
 946                 $q = q("SELECT `network`, `url` FROM `contact` WHERE `uid` != 0 AND `network` != ''
 947                         AND (`nurl` = '%s' OR `alias` IN ('%s', '%s')) AND `network` != '%s' LIMIT 1",
 948                         dbesc(normalise_link($item["author-link"])),
 949                         dbesc(normalise_link($item["author-link"])),
 950                         dbesc($item["author-link"]),
 951                         dbesc(NETWORK_STATUSNET));
 952                 if (count($q)) {
 953                         $generation = 2;
 954                         $network = $q[0]["network"];
 955                         $profile_url = $q[0]["url"];
 956                         logger("Known contact (generation 2): ".$profile_url, LOGGER_DEBUG);
 957                 }
 958         }
 959
 960         if ($generation == 3)
 961                 logger("Unknown contact (generation 3): ".$item["author-link"], LOGGER_DEBUG);
 962
 963         poco_check($profile_url, $item["author-name"], $network, $item["author-avatar"], "", "", "", "", "", $item["received"], $generation, $item["contact-id"], $item["uid"]);
 964
 965         // Maybe its a body with a shared item? Then extract a global contact from it.
 966         poco_contact_from_body($item["body"], $item["received"], $item["contact-id"], $item["uid"]);
 967 }
 968
 969 function count_common_friends($uid,$cid) {
 970
 971         $r = q("SELECT count(*) as `total`
 972                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 973                 where `glink`.`cid` = %d and `glink`.`uid` = %d
 974                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
 975                 intval($cid),
 976                 intval($uid),
 977                 intval($uid),
 978                 intval($cid)
 979         );
 980
 981 //      logger("count_common_friends: $uid $cid {$r[0]['total']}");
 982         if(count($r))
 983                 return $r[0]['total'];
 984         return 0;
 985
 986 }
 987
 988
 989 function common_friends($uid,$cid,$start = 0,$limit=9999,$shuffle = false) {
 990
 991         if($shuffle)
 992                 $sql_extra = " order by rand() ";
 993         else
 994                 $sql_extra = " order by `gcontact`.`name` asc ";
 995
 996         $r = q("SELECT `gcontact`.*
 997                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
 998                 where `glink`.`cid` = %d and `glink`.`uid` = %d
 999                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d )
1000                 $sql_extra limit %d, %d",
1001                 intval($cid),
1002                 intval($uid),
1003                 intval($uid),
1004                 intval($cid),
1005                 intval($start),
1006                 intval($limit)
1007         );
1008
1009         return $r;
1010
1011 }
1012
1013
1014 function count_common_friends_zcid($uid,$zcid) {
1015
1016         $r = q("SELECT count(*) as `total`
1017                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1018                 where `glink`.`zcid` = %d
1019                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
1020                 intval($zcid),
1021                 intval($uid)
1022         );
1023
1024         if(count($r))
1025                 return $r[0]['total'];
1026         return 0;
1027
1028 }
1029
1030 function common_friends_zcid($uid,$zcid,$start = 0, $limit = 9999,$shuffle = false) {
1031
1032         if($shuffle)
1033                 $sql_extra = " order by rand() ";
1034         else
1035                 $sql_extra = " order by `gcontact`.`name` asc ";
1036
1037         $r = q("SELECT `gcontact`.*
1038                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1039                 where `glink`.`zcid` = %d
1040                 and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
1041                 $sql_extra limit %d, %d",
1042                 intval($zcid),
1043                 intval($uid),
1044                 intval($start),
1045                 intval($limit)
1046         );
1047
1048         return $r;
1049
1050 }
1051
1052
1053 function count_all_friends($uid,$cid) {
1054
1055         $r = q("SELECT count(*) as `total`
1056                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1057                 where `glink`.`cid` = %d and `glink`.`uid` = %d ",
1058                 intval($cid),
1059                 intval($uid)
1060         );
1061
1062         if(count($r))
1063                 return $r[0]['total'];
1064         return 0;
1065
1066 }
1067
1068
1069 function all_friends($uid,$cid,$start = 0, $limit = 80) {
1070
1071         $r = q("SELECT `gcontact`.*
1072                 FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
1073                 where `glink`.`cid` = %d and `glink`.`uid` = %d
1074                 order by `gcontact`.`name` asc LIMIT %d, %d ",
1075                 intval($cid),
1076                 intval($uid),
1077                 intval($start),
1078                 intval($limit)
1079         );
1080
1081         return $r;
1082 }
1083
1084
1085
1086 function suggestion_query($uid, $start = 0, $limit = 80) {
1087
1088         if(! $uid)
1089                 return array();
1090
1091         $network = array(NETWORK_DFRN);
1092
1093         if (get_config('system','diaspora_enabled'))
1094                 $network[] = NETWORK_DIASPORA;
1095
1096         if (!get_config('system','ostatus_disabled'))
1097                 $network[] = NETWORK_OSTATUS;
1098
1099         $sql_network = implode("', '", $network);
1100         //$sql_network = "'".$sql_network."', ''";
1101         $sql_network = "'".$sql_network."'";
1102
1103         $r = q("SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
1104                 INNER JOIN glink on glink.gcid = gcontact.id
1105                 where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
1106                 and not gcontact.name in ( select name from contact where uid = %d )
1107                 and not gcontact.id in ( select gcid from gcign where uid = %d )
1108                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1109                 AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
1110                 AND `gcontact`.`network` IN (%s)
1111                 group by glink.gcid order by gcontact.updated desc,total desc limit %d, %d ",
1112                 intval($uid),
1113                 intval($uid),
1114                 intval($uid),
1115                 intval($uid),
1116                 $sql_network,
1117                 intval($start),
1118                 intval($limit)
1119         );
1120
1121         if(count($r) && count($r) >= ($limit -1))
1122                 return $r;
1123
1124         $r2 = q("SELECT gcontact.* from gcontact
1125                 INNER JOIN glink on glink.gcid = gcontact.id
1126                 where glink.uid = 0 and glink.cid = 0 and glink.zcid = 0 and not gcontact.nurl in ( select nurl from contact where uid = %d )
1127                 and not gcontact.name in ( select name from contact where uid = %d )
1128                 and not gcontact.id in ( select gcid from gcign where uid = %d )
1129                 AND `gcontact`.`updated` != '0000-00-00 00:00:00'
1130                 AND `gcontact`.`network` IN (%s)
1131                 order by rand() limit %d, %d ",
1132                 intval($uid),
1133                 intval($uid),
1134                 intval($uid),
1135                 $sql_network,
1136                 intval($start),
1137                 intval($limit)
1138         );
1139
1140         $list = array();
1141         foreach ($r2 AS $suggestion)
1142                 $list[$suggestion["nurl"]] = $suggestion;
1143
1144         foreach ($r AS $suggestion)
1145                 $list[$suggestion["nurl"]] = $suggestion;
1146
1147         return $list;
1148 }
1149
1150 function update_suggestions() {
1151
1152         $a = get_app();
1153
1154         $done = array();
1155
1156         // To-Do: Check if it is really neccessary to poll the own server
1157         poco_load(0,0,0,$a->get_baseurl() . '/poco');
1158
1159         $done[] = $a->get_baseurl() . '/poco';
1160
1161         if(strlen(get_config('system','directory_submit_url'))) {
1162                 $x = fetch_url('http://dir.friendica.com/pubsites');
1163                 if($x) {
1164                         $j = json_decode($x);
1165                         if($j->entries) {
1166                                 foreach($j->entries as $entry) {
1167
1168                                         poco_check_server($entry->url);
1169
1170                                         $url = $entry->url . '/poco';
1171                                         if(! in_array($url,$done))
1172                                                 poco_load(0,0,0,$entry->url . '/poco');
1173                                 }
1174                         }
1175                 }
1176         }
1177
1178         // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
1179         $r = q("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
1180                 dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA)
1181         );
1182
1183         if(count($r)) {
1184                 foreach($r as $rr) {
1185                         $base = substr($rr['poco'],0,strrpos($rr['poco'],'/'));
1186                         if(! in_array($base,$done))
1187                                 poco_load(0,0,0,$base);
1188                 }
1189         }
1190 }
1191
1192 function poco_discover($complete = false) {
1193
1194         $no_of_queries = 5;
1195
1196         $last_update = date("c", time() - (60 * 60 * 6)); // 24
1197
1198         $r = q("SELECT `poco`, `nurl`, `url`, `network` FROM `gserver` WHERE `last_contact` > `last_failure` AND `poco` != '' AND `last_poco_query` < '%s' ORDER BY RAND()", dbesc($last_update));
1199         if ($r)
1200                 foreach ($r AS $server) {
1201
1202                         if (!poco_check_server($server["url"], $server["network"]))
1203                                 continue;
1204
1205                         // Fetch all users from the other server
1206                         $url = $server["poco"]."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1207
1208                         logger("Fetch all users from the server ".$server["nurl"], LOGGER_DEBUG);
1209
1210                         $retdata = z_fetch_url($url);
1211                         if ($retdata["success"]) {
1212                                 $data = json_decode($retdata["body"]);
1213
1214                                 poco_discover_server($data, 2);
1215
1216                                 if (get_config('system','poco_discovery') > 1) {
1217
1218                                         $timeframe = get_config('system','poco_discovery_since');
1219                                         if ($timeframe == 0)
1220                                                 $timeframe = 30;
1221
1222                                         $updatedSince = date("Y-m-d H:i:s", time() - $timeframe * 86400);
1223
1224                                         // Fetch all global contacts from the other server (Not working with Redmatrix and Friendica versions before 3.3)
1225                                         $url = $server["poco"]."/@global?updatedSince=".$updatedSince."&fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1226
1227                                         $success = false;
1228
1229                                         $retdata = z_fetch_url($url);
1230                                         if ($retdata["success"]) {
1231                                                 logger("Fetch all global contacts from the server ".$server["nurl"], LOGGER_DEBUG);
1232                                                 $success = poco_discover_server(json_decode($retdata["body"]));
1233                                         }
1234
1235                                         if (!$success AND (get_config('system','poco_discovery') > 2)) {
1236                                                 logger("Fetch contacts from users of the server ".$server["nurl"], LOGGER_DEBUG);
1237                                                 poco_discover_server_users($data, $server);
1238                                         }
1239                                 }
1240
1241                                 q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
1242                                 if (!$complete AND (--$no_of_queries == 0))
1243                                         break;
1244                         } else  // If the server hadn't replied correctly, then force a sanity check
1245                                 poco_check_server($server["url"], $server["network"], true);
1246                 }
1247 }
1248
1249 function poco_discover_server_users($data, $server) {
1250
1251         if (!isset($data->entry))
1252                 return;
1253
1254         foreach ($data->entry AS $entry) {
1255                 $username = "";
1256                 if (isset($entry->urls)) {
1257                         foreach($entry->urls as $url)
1258                                 if($url->type == 'profile') {
1259                                         $profile_url = $url->value;
1260                                         $urlparts = parse_url($profile_url);
1261                                         $username = end(explode("/", $urlparts["path"]));
1262                                 }
1263                 }
1264                 if ($username != "") {
1265                         logger("Fetch contacts for the user ".$username." from the server ".$server["nurl"], LOGGER_DEBUG);
1266
1267                         // Fetch all contacts from a given user from the other server
1268                         $url = $server["poco"]."/".$username."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,generation";
1269
1270                         $retdata = z_fetch_url($url);
1271                         if ($retdata["success"])
1272                                 poco_discover_server(json_decode($retdata["body"]), 3);
1273                 }
1274         }
1275 }
1276
1277 function poco_discover_server($data, $default_generation = 0) {
1278
1279         if (!isset($data->entry) OR !count($data->entry))
1280                 return false;
1281
1282         $success = false;
1283
1284         foreach ($data->entry AS $entry) {
1285                 $profile_url = '';
1286                 $profile_photo = '';
1287                 $connect_url = '';
1288                 $name = '';
1289                 $network = '';
1290                 $updated = '0000-00-00 00:00:00';
1291                 $location = '';
1292                 $about = '';
1293                 $keywords = '';
1294                 $gender = '';
1295                 $generation = $default_generation;
1296
1297                 $name = $entry->displayName;
1298
1299                 if(isset($entry->urls)) {
1300                         foreach($entry->urls as $url) {
1301                                 if($url->type == 'profile') {
1302                                         $profile_url = $url->value;
1303                                         continue;
1304                                 }
1305                                 if($url->type == 'webfinger') {
1306                                         $connect_url = str_replace('acct:' , '', $url->value);
1307                                         continue;
1308                                 }
1309                         }
1310                 }
1311
1312                 if(isset($entry->photos)) {
1313                         foreach($entry->photos as $photo) {
1314                                 if($photo->type == 'profile') {
1315                                         $profile_photo = $photo->value;
1316                                         continue;
1317                                 }
1318                         }
1319                 }
1320
1321                 if(isset($entry->updated))
1322                         $updated = date("Y-m-d H:i:s", strtotime($entry->updated));
1323
1324                 if(isset($entry->network))
1325                         $network = $entry->network;
1326
1327                 if(isset($entry->currentLocation))
1328                         $location = $entry->currentLocation;
1329
1330                 if(isset($entry->aboutMe))
1331                         $about = html2bbcode($entry->aboutMe);
1332
1333                 if(isset($entry->gender))
1334                         $gender = $entry->gender;
1335
1336                 if(isset($entry->generation) AND ($entry->generation > 0))
1337                         $generation = ++$entry->generation;
1338
1339                 if(isset($entry->tags))
1340                         foreach($entry->tags as $tag)
1341                                 $keywords = implode(", ", $tag);
1342
1343                 if ($generation > 0) {
1344                         $success = true;
1345
1346                         logger("Store profile ".$profile_url, LOGGER_DEBUG);
1347                         poco_check($profile_url, $name, $network, $profile_photo, $about, $location, $gender, $keywords, $connect_url, $updated, $generation, 0, 0, 0);
1348                         logger("Done for profile ".$profile_url, LOGGER_DEBUG);
1349                 }
1350         }
1351         return $success;
1352 }
1353 ?>